870825640

素因数分解:

$2^3\times 5^1\times {\mathrm{21770641}}^1$

素因数の和:21770652

約数の個数: 16

約数和(自身を含む): 1959357780

約数和(自身を除く): 1088532140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 21770641, 43541282, 87082564, 108853205, 174165128, 217706410, 435412820, 870825640]

約数ペア:

[(1, 870825640), (2, 435412820), (4, 217706410), (5, 174165128), (8, 108853205), (10, 87082564), (20, 43541282), (40, 21770641)]